I am developing a Android app using Jquery Mobile/Phonegap. I have the following code to control the phone's back button:

document.addEventListener("backbutton", backKeyDown, true); 


function backKeyDown() { 
    // Call my back key code here.
    $.mobile.changePage("#homepage", "slideup");
}

This all works fine, but I would like the app to close when pressing the back button on the homepage only, is this possible?

jquery-mobile cordova
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